Seagate Constellation ES or HGST 7K Ultrastar series are the first ones to come to mind, but they are enterprise drives, designed for 24/7 operation. A fast disk in the consumer range is the Seagate Barracuda 7200.14 range, but they are hampered by a lousy 1 year warranty. An alternative in the consumer range is the WD Caviar Black.
Haven't had much experience with Samsungs (or Seagates, lately). Been using HGST (Hitachi) Deskstars and Ultrastars.
FYI, WD desktop drives (Caviar Black, etc.) aren't warranted for external RAID of any kind or internal parity RAID, which is why I stay away from them for the most part.
On the Enterprise side, Ultrastars are the only ones with both a 5-year warranty and 2m MTBF rating.